[A4] ignition coils

[Peter Kirby]

Under the advice of my trusty indie VW/Audi/Porsche mechanic, I'm going to
change all coils and plugs and see what happens.  I'll report back.

Thanks for the commiseration.

Peter
------------------------------
*From:* "gordies garage" <audidoodie at comcast.net>
*To:* "a4 at audifans.com" <a4 at audifans.com>
*Sent:* 4 February, 2013 5:28 PM
*Subject:* Re: [A4] ignition coils

Oddly enough, I've never (to my knowledge) had a coil fail, and mine
are all original.  Although not lately, I have done many track events
and have ridden 'er hard, but usually took good care to cool down,
etc.
I'm at 172k miles on my car and counting.
  From: Robert King
  From: Robert King
  Sent: Monday, February 04, 2013 11:37 AM
  To: gordies garage
  Subject: Re: [A4] ignition coils


  I used to lose coils fairly regularly (I was up to 6,) when I
decided to discard the engine cover.  In the past 8 years I've only
lost one.  What pointed me to the engine cover was the loss of two
coils at a weekend track event.  Two coils failed, but I was able to
coast into the pits.  I pulled the codes and found cylinders 1 and 2
were dead.  I left the hood open and took the engine cover off.  30
minutes later I restarted the engine and it ran fine and continued to
run fine until 15 minutes into the next 20-minute track session where
#1 and 2 failed again.  Again, letting the engine cool off fixed the
problem.


  I ran with those coils for 8 more years until #1 died for good a
couple of months ago.


  Get a spare coil and carry it in the trunk.  Be familiar with changing them.



  On Mon, Feb 4, 2013 at 5:23 AM, gordies garage  wrote:

    I too have a miss at high load with my A4.  Replacement of spark
plugs helped, but did not cure the problem.  My car is currently with
my favorite independent who will attend to that and several other
minor problems.
    I'll let you know what he discovers.

    Gordie Bird
    '98 A4 TQSM
    '03 A6 Avant

    --------------------------------------------------
    From: "Jon"
    Sent: Monday, February 04, 2013 3:12 AM
    To:

    Subject: Re: [A4] ignition coils


      Hi Peter,

      With the clarifier that I am only working from some base theory:

      To burn out a coil, you need to get it too hot, or have too high
a current (which makes it too hot)

      So, I'm assuming that there is no mechanical or cooling fault
that would result in this.You didn't have any spare parts left over
after servicing it?

      Given that, check the spark plugs, including the gap, and look
for shorts between the coil and the plug.

      But why under high load? Not sure.

      Hope that helps,

      cheers

      Jon

      On 04/02/13 07:00, a4-request at audifans.com wrote:

        Message: 2
        Date: Sun, 03 Feb 2013 18:55:28 -0000
        From: Peter Kirby <4pkirby at gmail.com>
        To: Peter Kirby <4pkirby at gmail.com>, A4 at audifans.com
        Subject: Re: [A4] ignition coils
        Message-ID: <2505211649641093287 at unknownmsgid>
        Content-Type: text/plain; charset=ISO-8859-1

        I just checked...I'm getting a code on not only #1 but also #3.

        Peter
        ------------------------------
        *From:* "Peter Kirby" <4pkirby at gmail.com>
        *To:* "A4 at audifans.com"
        *Sent:* 2 February, 2013 7:35 PM
        *Subject:* ignition coils

        Hi Everyone

        In the last month or so, I have gone through four ignition coils on
        cylinder #1.  They always fail under fairly heavy load.  When it fails,
        the CEL flashes.

        Any idea what causes these to burn on just one cylinder?  Bad
        connection?  Bad ground?

        Thanks in advance.

        Peter
        2001 1.8tq A4 (AWN)


        ------------------------------

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  --
  -- Robert
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